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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988 9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (9 16)921 9600 FAX(916)92 1-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707) 792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232 9600 FAX(650)232-9612 <br /> equoia Analytical Client Project Ib 1-904337-Shell Oif Company Sampled -- <br /> 1551 Industrial Blvd Sample Descript Water Received -- <br /> San Carlos, CA 94070 Analysis Method EPA 8010 Analyzed May 5, 1999 <br /> Attention Mike Gregory Lab Number Method Blank Reported May 10, 1999 <br /> QC Batch Number GCO50599801006A <br /> Instrument ID HP-6 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> Ng/L lig/L <br /> Bromodichloromethane 050 N D <br /> Bromoform 050 N D <br /> Bromomethane 1 0 N D <br /> Carbon tetrachloride 050 N D <br /> Chlorobenzene 050 N D <br /> Chloroethane 10 N D <br /> Chloroform 050 N D <br /> Chloromethane 1 0 N D <br /> Dlbromochloromethane 050 N D <br /> 1,3-Dichlorobenzene 050 N D <br /> 1,4-Dichlorobenzene 050 N D <br /> 1,2-Dichlorobenzene 050 N D <br /> 1,1-Dichloroethane 050 N D <br /> 1,2-Dlchloroethane 050 N D <br />* 1-Dichloroethene 050 N D <br /> Is-1,2-Dichloroethene 050 N D <br /> trans-1,2-Dichloroethene 050 N D <br /> 1,2-Dichloropropane 050 N D <br /> cis-1,3-Dichloropropene 050 N D <br /> trans-1,3-DichIoropropene 050 N D <br /> Methylene chloride 10 <br /> 1,1,2,2-Tetrachloroethane 050 N D <br /> Tetrachloroethene 050 N D <br /> 1,1,1-Trichloroethane 050 N D <br /> 1,1,2-Trichloroethane 050 N D <br /> Trichloroethene 050 N D <br /> Trichlorofluoromethane 050 N D <br /> Vinyl chloride 10 N D <br /> 1,2-Dlbromoethane 1 0 N D <br /> Surrogates Control Limit % % Recovery <br /> Dibromodifluoromethane 50 150 110 <br /> 4-Bromofluorobenzene 50 150 128 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> * Over calibration range due to extensive air contamination <br /> Charlie Westwater <br /> Project Manager <br /> 9050264 SSS <6> <br />